What is Cholesterol?

Cholesterol is a sterol (a combination steroid and alcohol). Cholesterol is a lipid found in the cell membranes of all tissues, and it is transported in the blood plasma of all animals. Because cholesterol is synthesized by all eukaryotes, trace amounts of cholesterol are also found in membranes of plants and fungi.The name originates from the Greek chole- (bile) and stereos (solid), and the chemical suffix -ol for an alcohol, as researchers first identified cholesterol in solid form in gallstones by Francois Poulletier de la Salle in 1769. However, it is only in 1815 that chemist Eugene Chevreul named the compound "cholesterine".[2]Most of the cholesterol is synthesized by the body and some has dietary origin. Cholesterol is more abundant in tissues which either synthesize more or have more abundant densely-packed membranes, for example, the liver, spinal cord and brain. It plays a central role in many biochemical processes, such as the composition of cell membranes and the synthesis of steroid hormones. Cholesterol is insoluble in blood, but is transported in the circulatory system bound to one of the varieties of lipoprotein, spherical particles which have an exterior composed mainly of water-soluble proteins. The main types, low-density lipoprotein (LDL) and high-density lipoprotein (HDL) carry cholesterol from and to the liver.According to the lipid hypothesis, abnormally high cholesterol levels (hypercholesterolemia) and abnormal proportions of LDL and HDL are associated with cardiovascular disease by promoting atheroma development in arteries (atherosclerosis). This disease process leads to myocardial infarction (heart attack), stroke and peripheral vascular disease. As high LDL contributes to this process, it is termed "bad cholesterol", while high levels of HDL ("good cholesterol") offer a degree of protection. The balance can be redressed with exercise, a healthy diet, and sometimes medication.

blood pressure measuring instruments
Checking Up on Blood Pressure Monitors
There are two alternative types of blood pressure measuring instruments being marketed. Aneroid devices, which have no liquid, use metal that acts like a

Blood Pressure Testing and Measurement
Blood pressure is measured by a quick, painless test using a medical instrument called a sphygmomanometer (SFIG'mo-mah-NOM'eh-ter).

Blood Pressure Measuring Devices
This device was the prototype of today's standard instrument. A young girl uses a modern blood pressure measuring instrument. Today, home versions of

Blood Pressure Monitors: advice on accurate blood pressure monitors
Blood Pressure Monitors and Measuring Blood Pressure: Information and Advice Omron and A and D Instruments - accurate monitors for home use and

High Blood Pressure
Other Blood-Pressure Monitors. Alternative pressure-measuring aneroid and electronic devices are also available. Aneroid instruments are round compass-like

Instrument for measuring blood pressure and temperature - US
Instrument for measuring blood pressure and temperature - US Patent 6440081 from Patent Storm. An instrument for measuring blood pressure and temperature

Automatic blood pressure measuring instrument and method thereof
Automatic blood pressure measuring instrument and method thereof - US Patent 7226418 from Patent Storm. An automatic blood pressure measuring instrument for

(WO/2004/019754) AUTOMATIC BLOOD PRESSURE MEASURING INSTRUMENT AND
Disclosed is an automatic blood pressure measuring instrument and method designed to obtain a pulse wave signal and electrocardiogram (ECG) signals from a

Blood pressure measuring instrument having compensation circuit
A sphygmomanometer includes a blood pressure detector, a compensation circuit for providing polygonal line approximation functions suitable for

Pressure relief valve for blood pressure measuring instrument
A pressure relief valve for a blood pressure measuring instrument which is provided with a discharge mechanism for selectively discharging a small or large

Pressure measurement - Wikipedia, the free encyclopedia
A manometer is a pressure measuring instrument, usually limited to measuring Tire pressure and blood pressure are gauge pressures by convention,

Electrical & Electronic Measuring Instruments, Electronic
Electrical & Electronic Measuring Instruments, Electronic Measuring, Electronic Blood Pressure Monitor Instruments Manufacturers Suppliers

A Flexible Control and Analysis Tool for Automatic Blood Pressure
Automated blood pressure measuring instruments are widely used not only in the hospital setting but even more frequently in the home-care environment and

ABC of hypertension: Blood pressure measurement -- Beevers et al
Instruction in the theory of hypertension and blood pressure measurement . For more extensive repairs, the instrument should be securely packed with

Blood Pressure Monitoring Equipment by W.A. Baum maker of the
To obtain accurate blood pressure readings, the user requires 1) An accurate pressure measuring instrument, 2) The correct size cuff as it relates to the

Blood Pressure Monitors - machines for home use.
Measuring your blood pressure at home can be very useful and can help you to feel All A and D Instruments monitors have small, standard and large cuffs

High Blood Pressure: Heart and Blood Vessel Disorders: Merck
Measuring Blood Pressure. Measuring Blood Pressure. Several instruments can measure blood pressure quickly and with little discomfort.


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